摘要
利用氮气保护高温固相法合成一系列氟铝酸锶红色荧光粉Sr3-xEuxAl1-yByO4-yNyF,利用氮化硼BN取代基质中的部分Al2O3,改变基质组成和内部结构,使基质晶格发生畸变,进而影响Eu3+离子的发光性能。利用X射线粉末衍射仪、光电子能谱、扫描电镜以及荧光分光光度计对所合成样品的物相结构、组成、形貌以及荧光性能进行表征,研究BN的掺杂对荧光性能的影响,发现一定量的BN进入基质能起到增强Eu3+发光的作用。初步对BN氮化对红光增强的机理进行了探讨。
Series of oxyfluoride phosphors Sr3-xEuxAl1-yByO4-yNyF were prepared by the conven-tional solid-state reaction. The composition and structure of the Sr3AlO4F∶Eu^3＋ could be adjusted by doping BN into the host, and then the luminescence properties of Sr3-xEuxAl1-yByO4-yNyF would be affected. X-ray diffraction （ XRD） , X-ray photoelectron spectrum （ XPS） , scanning electron microscopy （ SEM） , as well as photoluminescence （ PL） spectra were utilized to characterize the sam-ples. Under the excitation of UV light, Sr3-x EuxAl1-y ByO4-y NyF exhibits the characteristic emis-sions of Eu^3＋, and the luminescence properties of Eu^3＋ can be enhanced by adjusting doping con-centration of BN in the host. The corresponding mechanism has been proposed briefly.
出处
《发光学报》
EI
CAS
CSCD
北大核心
2015年第3期322-327,共6页
Chinese Journal of Luminescence
基金
国家自然科学基金(21161004)
广西自然科学基金(2011GXNSFA018048)资助项目
